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1. 发明授权

US06603556B2 Photometric detection system having multiple path length flow cell 有权
公开(公告)号：US06603556B2
公开(公告)日：2003-08-05
申请号：US09975164
申请日：2001-10-11
申请人： Mathias Belz , Su Yi Liu , Richard L. Miller
发明人： Mathias Belz , Su Yi Liu , Richard L. Miller
IPC分类号： G01N2100
CPC分类号： G01N21/05 , G01N2021/0346
摘要： A photometric detection system including a light source, a photometric detector, and a flow cell assembly. The flow cell assembly includes a tubular liquid core waveguide having inlet and discharge ends for receiving and discharging a flow of the sample fluid. A first coupling device optically couples the light source to the waveguide at a first position along the length of the waveguide. A second coupling device optically couples the detector to the waveguide at a second position along the length of the waveguide. The first and second positions define an optical path length within the waveguide. The second position is variable relative to the first position such that the optical path length is selectively varied.

2. 发明授权

US06926867B1 Pipette piston seal assembly 失效
标题翻译：移液器活塞密封组件
公开(公告)号：US06926867B1
公开(公告)日：2005-08-09
申请号：US10003537
申请日：2001-10-30
申请人： Su Yi Liu , Guo Chen Liu
发明人： Su Yi Liu , Guo Chen Liu
IPC分类号： B01L3/02
CPC分类号： B01L3/0217 , B01L2200/0689
摘要： A piston seal assembly for a pipette includes an O-ring having radially inner and outer surfaces and axially separated first and second surfaces. A seal includes a radially extending rim portion having axially separated first and second surfaces and an axially extending sleeve portion forming an opening. A seat includes an axially extending indexing portion and a radially extending engagement portion forming an opening and having axially separated first and second surfaces. The seal is positioned such that the pipette piston extends through the opening and the radially inner surface of the sleeve portion slidably engages the piston. The seat is positioned such that the piston extends through the opening, the first and second surfaces of the engagement portion engage the second surface of the rim portion and an end of the spring, respectively, and the radially outer surface of the indexing portion engages the inner surface of the pipette body. The O-ring is positioned such that the sleeve portion of the seal extends axially through the opening of the O-ring, the radially inner surface of the O-ring engages the radially outer surface of the sleeve portion, the radially outer surface of the O-ring engages the radially inner surface of the indexing portion, the first surface of the O-ring engages a shoulder of the pipette body, and the second surface of the O-ring engages the first surface of the rim portion.
摘要翻译：用于移液管的活塞密封组件包括具有径向内表面和外表面以及轴向分离的第一和第二表面的O形环。密封件包括具有轴向分离的第一和第二表面的径向延伸的边缘部分和形成开口的轴向延伸的套筒部分。座椅包括轴向延伸的分度部分和形成开口并且具有轴向分离的第一和第二表面的径向延伸的接合部分。密封件定位成使得移液管活塞延伸穿过开口并且套筒部分的径向内表面可滑动地接合活塞。座位定位成使得活塞延伸穿过开口，接合部分的第一和第二表面分别接合边缘部分的第二表面和弹簧的端部，并且分度部分的径向外表面接合移液管体的内表面。 O形环定位成使得密封件的套筒部分轴向延伸穿过O形环的开口，O形环的径向内表面接合套筒部分的径向外表面， O形环与分度部分的径向内表面接合，O形环的第一表面接合移液管主体的肩部，O形环的第二表面接合边缘部分的第一表面。

3. 发明授权

US6020207A Optical analysis technique and sensors for use therein 失效
标题翻译：用于其中的光学分析技术和传感器
公开(公告)号：US6020207A
公开(公告)日：2000-02-01
申请号：US98859
申请日：1998-06-17
申请人： Su Yi Liu
发明人： Su Yi Liu
IPC分类号： G01N21/03 , G01N21/64 , G01N21/65 , G01N21/77 , G01N21/63
CPC分类号： G01N21/6428 , G01N21/0303 , G01N21/05 , G01N21/65 , G01N21/7703 , G01N2021/0346 , G01N2021/6417 , G01N2021/6484
摘要： The detection of a chemical specie of interest is accomplished by immobilizing sensing molecules on the inner wall of a liquid core optical waveguide, the waveguide comprising a capillary tube and the sensing molecules being selected to interact with the specie of interest carried by the liquid which forms the waveguide core. The interaction produces a change in an optical characteristic of the waveguide which may be detected by illuminating the waveguide with analysis light.
摘要翻译：感兴趣的化学物质的检测通过将感测分子固定在液芯光波导的内壁上来实现，波导包括毛细管，并且感测分子被选择为与形成的液体携带的感兴趣的物质相互作用波导芯。相互作用产生波导的光学特性的变化，其可以通过用分析光照射波导来检测。

4. 发明授权

US6011882A Chemical sensing techniques employing liquid-core optical fibers 失效
标题翻译：采用液芯光纤的化学传感技术
公开(公告)号：US6011882A
公开(公告)日：2000-01-04
申请号：US951254
申请日：1997-10-16
申请人： Purnendu K. Dasgupta , Su Yi Liu
发明人： Purnendu K. Dasgupta , Su Yi Liu
IPC分类号： G01N21/05 , G01N21/77 , G02B6/032 , G02B6/00
CPC分类号： G02B6/032 , G01N21/05 , G01N21/7703
摘要： A permeable optical fiber waveguide with a liquid core is employed as a probe for the detection or measurement of a chemical specie of interest by filling the waveguide core region with a light transmitting reagent liquid which undergoes a change in an optical characteristic thereof when exposed to the chemical specie and then inserting the filled waveguide into an environment in which the chemical specie may be present. The chemical specie, if present, will permeate through the waveguide wall and react with or be absorbed in the core liquid.
摘要翻译：采用具有液芯的透光性光纤波导作为用于检测或测量感兴趣的化学物质的探针，通过用暴露于其中的光学特性的光透射性试剂液体填充波导芯区域然后将填充的波导插入到可能存在化学物质的环境中。化学物质（如果存在）将渗透通过波导壁，与核心液体反应或吸收。

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